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STMicroelectronics TSC2020IDT
- Part No.:
- TSC2020IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSC2020IDT.pdf
- Description:
- SO 08 .15 JEDEC
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
TSC2020IDT from STMicroelectronics is a precision bidirectional current sense amplifier with fixed 20 V/V gain, designed for high-side and low-side shunt-based current measurement in automotive and industrial 48 V systems. It operates over -4 V to +100 V common-mode voltage range, delivers ±150 µV max offset voltage, 100 dB min CMR, and supports supply voltages from 2.7 V to 5.5 V - enabling accurate sensing in battery management, motor control, and 48 V power distribution.
For engineers reviewing the TSC2020IDT datasheet, TSC2020IDT pinout, TSC2020IDT application, or TSC2020IDT equivalent, this device is selected for its AEC-Q100 qualification, enhanced PWM rejection, stable gain error (≤0.3%), and validated performance across -40 °C to +125 °C ambient temperature - critical for functional safety–aware current monitoring in EV subsystems and industrial power stages.
Technical Context
The TSC2020IDT employs a zero-drift architecture with thin-film resistor network to achieve high DC precision and 100 dB minimum CMRR up to DC. Its internal PWM enhancer detects fast common-mode transients (e.g., gate-drive-induced dV/dt) and dynamically suppresses output disturbance without external filtering.
It features dual reference inputs (VREF1, VREF2) enabling flexible output common-mode setting - supporting unidirectional (single-supply referenced) or bidirectional (center-swing) operation. The SO8 package supports thermal dissipation up to 125 °C/W junction-to-ambient, aligned with automotive under-hood requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed - enables direct scaling of 100 mV shunt drop to 2 V output for 12-bit ADC full-scale use. |
| Common-mode voltage range | -4 V to +100 V - supports high-side sensing in 48 V battery systems and negative rail monitoring without level-shifting. |
| Offset voltage (max) | ±150 µV - ensures ≤7.5 µA error at 50 mΩ shunt, critical for low-current accuracy in sleep-mode BMS monitoring. |
| CMR (min) | 100 dB - rejects >99.99% of common-mode noise from switching nodes, preserving signal integrity in noisy motor drive environments. |
| Supply voltage range | 2.7 V to 5.5 V - compatible with standard 3.3 V or 5 V microcontroller I/O domains and automotive LDO outputs. |
| Operating temperature | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1, suitable for engine bay and traction inverter proximity mounting. |
| Gain error (max) | 0.3% - limits full-scale current measurement uncertainty to ±0.3%, eliminating need for per-unit calibration in volume production. |
Pinout & Package
Available in SO8 (small-outline integrated circuit) package with standard 1.27 mm pitch, rated for surface-mount reflow and automotive thermal cycling. Pin mapping validated per DS14393 Rev 7 (page 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Positive differential input | Connects to high-side of shunt; withstands up to +100 V common-mode voltage relative to GND. |
| IN- | Negative differential input | Connects to low-side of shunt; supports -4 V common-mode, enabling bidirectional current flow detection. |
| GND | Analog ground reference | Return path for internal biasing; must be star-connected to minimize ground bounce in high-dI/dt applications. |
| VCC | Power supply input | Accepts 2.7–5.5 V; internal regulation ensures stable core bias across automotive battery variation (e.g., cold-crank 6 V → rest 13.8 V). |
| OUT | Differential output | Single-ended voltage output referenced to GND; drives 10 kΩ load with <35 mV drop at 2 mA sink/source. |
| VREF1 / VREF2 | Output common-mode control inputs | Set output DC level: tying one to VCC and one to GND fixes OUT at VCC/2 for bidirectional sensing with rail-to-rail ADCs. |
| NC | No-connect terminal | Pin 4 in SO8 is internally unused; must remain floating or grounded per layout best practice to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced PWM rejection | Integrated transient detector actively compensates for fast dV/dt on IN+/IN−, reducing output glitch amplitude by >80% during MOSFET switching edges. |
| AEC-Q100 qualification | Qualified to Grade 1 (-40 °C to +125 °C), including HTOL, TC, ESD (HBM 2000 V), and AC/DC stress - meets ASIL-B component readiness for automotive current feedback loops. |
| Zero-drift topology | Chopper-stabilized input stage achieves <0.5 µV/°C offset drift, ensuring <1.5 µV total drift over full temperature range - eliminates thermal nulling circuitry. |
| Wide supply range | Operates from 2.7 V to 5.5 V with <2.4 mA ICC across voltage and temperature - enables direct interface with 3.3 V MCU domains while surviving automotive load-dump transients. |
| Reference flexibility | VREF1/VREF2 allow programmable output common-mode from 0 V to VCC - supports single-supply ADCs (unidirectional) or differential-input ADCs (bidirectional) without external op-amps. |
Applications
| Automotive Battery Management | 48 V Power Distribution Unit |
|---|---|
|
Use Scenario: Real-time cell-string current monitoring during charge/discharge cycles in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Bidirectional current sense amplifier measuring ±200 A via 100 µΩ shunt, with output referenced to MCU ADC mid-scale (2.5 V). Use Value: ±0.3% gain error and ±150 µV offset ensure ≤0.5 A absolute current accuracy at 200 A full scale - meeting ISO 26262 diagnostic coverage targets for state-of-charge estimation. |
Use Scenario: Load current monitoring in 48 V PDU for ADAS domain controllers and infotainment subsystems. IC Role / Device Role / Timing Role: High-side current sensor placed between 48 V bus and load switch, rejecting common-mode ripple from adjacent DC-DC converters. Use Value: 100 dB CMR suppresses >99.99% of 100 kHz switching noise from buck regulators, preventing false overcurrent trips during transient load steps. |
| Industrial Motor Control | 48 V Cordless Power Tools |
|
Use Scenario: Phase current sensing in 3-phase BLDC inverters driving HVAC compressors or pumps. IC Role / Device Role / Timing Role: Low-side shunt amplifier with PWM enhancer active during IGBT gate transitions, minimizing measurement corruption during dead-time intervals. Use Value: Sub-µs settling time (<8 µs to 1%) after 48 V common-mode step enables accurate current sampling within 1 µs window post-PWM edge - critical for FOC torque loop stability. |
Use Scenario: Battery pack discharge current monitoring during high-torque operation in cordless drills and impact drivers. IC Role / Device Role / Timing Role: Bidirectional amplifier interfaced to 16-bit SAR ADC, configured for ±50 A range using 2 mΩ shunt and VREF1/VREF2 biasing. Use Value: -4 V to +100 V common-mode range allows direct connection across shunt without isolation, reducing BOM cost and PCB area versus optocoupled solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | Fixed 20 V/V gain, 80 V common-mode max, 120 dB CMR, but no VREF pins - output common-mode fixed at VCC/2. | Lacks programmable output offset; requires external level-shifting for unidirectional sensing or non-mid-rail ADCs. | Select when highest CMR (>120 dB) is prioritized over reference flexibility and system-level calibration simplicity. |
| MAX40056ATA+T | 20 V/V gain, 65 V common-mode max, 105 dB CMR, integrated overvoltage protection clamps on IN+/IN−. | Clamp diodes limit survivability in >65 V fault conditions; not rated for 100 V continuous operation like TSC2020IDT. | Prefer where robustness against short-circuit-induced voltage spikes is critical, and 48 V nominal operation dominates design envelope. |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the TSC2020IDT uniquely combines 100 V common-mode tolerance, dual VREF configurability, and AEC-Q100 Grade 1 qualification - making it the only option qualified for direct integration into 48 V automotive traction inverters requiring both high-voltage margin and flexible ADC interfacing.
Availability
TSC2020IDT is available at Aetrix Electronics and suitable for automotive battery management, 48 V power distribution, and industrial motor control applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSC2020IDT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader specializing in automotive-grade analog, power, and microcontroller solutions with deep expertise in high-reliability current sensing and functional safety compliance.
The TSC202x series was developed specifically for precision bidirectional current measurement in 48 V automotive and industrial systems - emphasizing AEC-Q100 qualification, wide common-mode operation, and PWM noise immunity in harsh electromagnetic environments.
FAQ
What is the maximum common-mode voltage the TSC2020IDT can handle continuously?
The TSC2020IDT supports continuous operation from -4 V to +100 V common-mode voltage on its IN+ and IN− inputs, verified per absolute maximum ratings in DS14393 Rev 7. This enables direct high-side sensing in 48 V battery systems with headroom for load-dump transients up to 100 V without external protection components.
How does the PWM enhancer function improve measurement accuracy in motor control?
The PWM enhancer detects rapid dV/dt events on the input common-mode bus and applies dynamic compensation to suppress output glitches. Measured data shows >80% reduction in overshoot during 48 V, 100 ns rise-time steps - preserving current waveform fidelity during MOSFET switching intervals critical for field-oriented control loops.
Can the TSC2020IDT be used for unidirectional current sensing with a 3.3 V ADC?
Yes. By connecting VREF1 to VCC (3.3 V) and VREF2 to GND, the output common-mode is set to 1.65 V - matching the mid-scale of a 3.3 V single-ended ADC. The 20 V/V gain scales a ±100 mV shunt drop to ±2 V output swing centered at 1.65 V, enabling full-range unidirectional measurement without external level-shifting.
Is the TSC2020IDT pin-compatible with other members of the TSC202x family?
Yes. TSC2020IDT, TSC2021IDT, and TSC2022IDT share identical SO8, MiniSO8, and TSSOP8 pinouts and electrical interfaces. Only the internal gain differs (20×, 50×, 100×), allowing hardware reuse across designs with different shunt resistance or dynamic range requirements - simplifying platform scalability and BOM consolidation.
TSC2020IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 700 kHz
- Current - Input Bias:
- 200 µA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 1.8mA
- Current - Output / Channel:
- 14.5 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TSC2020IDT FAQ
1.How can I place an order for TSC2020IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC2020IDT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TSC2020IDT reliable?
The price and inventory of TSC2020IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC2020IDT is usually 5 days.
3.What payment methods are accepted for TSC2020IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC2020IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC2020IDT?
TSC2020IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC2020IDT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TSC2020IDT?
For technical support, including TSC2020IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC2020IDT requirements.
6.How does Aetrix verify that TSC2020IDT is sourced from the original manufacturer or authorized distributors?
All TSC2020IDT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TSC2020IDT meets industry standards.
7.What is the process for return or replacement of TSC2020IDT?
All TSC2020IDT units undergo pre-shipment inspection (PSI). If there is an issue with TSC2020IDT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TSC2020IDT part is unused and in its original packaging.
Return procedure for TSC2020IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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